EP 0436785 A1 19910717 - Film cassette.
Title (en)
Film cassette.
Title (de)
Filmkassette.
Title (fr)
Cassette à films.
Publication
Application
Priority
US 46426590 A 19900112
Abstract (en)
In a film cassette (1), a film spool (5) comprises a spool core (23) supported for rotation in an unwinding direction (U) to thrust a leader section (35) of a filmstrip (F) coiled about the spool core from the cassette and in a winding direction (W) to return the leader to the cassette, and a pair of flanges (41, 43) positioned along the spool core (23) to overlie opposite sides of the film roll (33). The flanges (41, 43) have respective central openings through which the spool core (23) axially extends to normally permit each of the flanges to be independently rotated relative to the spool core in the unwinding and winding directions (U, W). According to the invention, the spool core (23) includes a core piece (27) connected to a remaining portion of the spool core for limited movement within the central opening of one of the flanges (41, 43), away from the remaining portion, to engage the flange to rotate the flange in unity with the spool core when the spool core is rotated in the unwinding direction (W), to improve the ability of the film spool (5) to thrust the leader (35) from the cassette (1), and toward the remaining portion, to disengage the flange to permit the flange to be independently rotated when the spool core is rotated in the winding direction (W). <IMAGE>
IPC 1-7
IPC 8 full level
G03B 17/26 (2006.01); G03B 17/30 (2006.01); G03C 3/00 (2006.01)
CPC (source: EP KR US)
G03B 17/30 (2013.01 - EP US); G03C 3/00 (2013.01 - KR); G03B 2217/261 (2013.01 - EP US); G03B 2217/266 (2013.01 - EP US)
Citation (search report)
- [A] EP 0341748 A2 19891115 - EASTMAN KODAK CO [US]
- [AP] EP 0386625 A1 19900912 - EASTMAN KODAK CO [US]
- [A] GB 112801 A 19180121 - ALLEN WEST & CO LTD, et al
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0436785 A1 19910717; AU 6121790 A 19910718; AU 622850 B2 19920416; JP H03215847 A 19910920; KR 910014747 A 19910831; US 5046679 A 19910910
DOCDB simple family (application)
EP 90120121 A 19901019; AU 6121790 A 19900823; JP 24596490 A 19900914; KR 900013904 A 19900904; US 46426590 A 19900112